dragImageForRows(with:tableColumns:event:offset:)
Computes and returns an image to use for dragging.
Declaration
func dragImageForRows(with dragRows: IndexSet, tableColumns: [NSTableColumn], event dragEvent: NSEvent, offset dragImageOffset: NSPointPointer) -> NSImageParameters
- dragRows:
An index set containing the row indexes that should be in the image.
- tableColumns:
An array of table columns that should be in the image.
- dragEvent:
The event that initiated the drag.
- dragImageOffset:
An in/out parameter specifying the offset of the cursor in the image, the default value is Nszeropoint. Returning Nszeropoint causes the cursor to be centered.
Return Value
An NSImage containing a custom image for the specified rows and columns participating in the drag.